UpUnet.sh

UpUnet-S Connectivity Script

# UpUnet-S Connectivity script
# 1: Keeps connection alive by continious pinging
# 2: Automatically reconnects to UpUnet-S using provided username/password
# 3: Keep you informed about changes in connectivity to...
# -- Router -> UpUnet-S -> Internet -> DNS Server

# USAGE
# Install coreutils (brew install coreutils)
# Add as a function in your .bash_profile on your UNIX system
# Call by writing: upunet

# Utilizes coreutils (brew install coreutils)
function upunet {
	clear
	echo "Monitoring and handling UpUnet-S connectivity"

	# You must URL-encode your special characters!
	# For example, replace + with %2B (google 'URL encode' for more info)
	USERGROUP="UpUnet-S"
	USER="ENTER YOUR USERNAME HERE"				# Username variable busy!
	PASSWORD="ENTER YOUR PASSWORD HERE"

	STEP1IP="192.168.1.1"	# An IP to check your connectivity to your Router
	STEP2IP="10.10.10.10"	# An IP to check your connectivity to UpUnet-S
	STEP3IP="8.8.8.8"	# An IP to check your internet access
	
	PINGATTEMPTS=4
	PINGDELAY=0.2
	PINGTIMEOUT=1
	
	TIMEFORMAT="+%H:%M:%S"
	LOGINURL="https://10.10.10.10/?action=Login&usergroup=${USERGROUP}&username=${USER}&password=${PASSWORD}"
	WGETCALL="wget --spider --no-check-certificate"
	
	MESSAGE=""
	LATEST="?"
	while [ true ]; do
		STEP3=$[ $(gtimeout $PINGTIMEOUT ping -i $PINGDELAY -c $PINGATTEMPTS $STEP3IP 2>&1 | grep -c "bytes from") != 0 ]
		if [ $STEP3 == 1 ]; then
			# Only check DNS whenever we regain lost connectivity to internet 
			if [ $LATEST != "Full internet access" ]; then
				DNS=$[ $(host www.google.com | grep -c "has address") != 0 ]
				if [ $DNS != 0 ]; then
					MESSAGE="Full internet access"
				else
					MESSAGE="Internet access with DNS failure"
				fi
			fi
		else
			STEP2=$[ $(gtimeout $PINGTIMEOUT ping -i $PINGDELAY -c $PINGATTEMPTS $STEP2IP 2>&1 | grep -c "bytes from") != 0 ]
			if [ $STEP2 == 1 ]; then
				LOGIN=$[ $(wget --spider --no-check-certificate $LOGINURL 2>&1 | grep -c '200 OK') == 1 ]
				if [ $LOGIN == 1 ]; then
					MESSAGE="UpUnet-S login succeeded"
				else
					MESSAGE="UpUnet-S login failed"
				fi
			else
				STEP1=$[ $(gtimeout $PINGTIMEOUT ping -i $PINGDELAY -c $PINGATTEMPTS $STEP1IP 2>&1 | grep -c "bytes from") != 0 ]
				if [ $STEP1 == 1 ]; then
					MESSAGE="No internet access, can't reach UpUnet-S ($STEP2IP)"
				else
					MESSAGE="No internet access, can't reach Router ($STEP1IP)"
				fi
			fi
		fi

		# Notify changes only
		if [ $MESSAGE != $LATEST ]; then
			echo "$(date $TIMEFORMAT) - Connection: $MESSAGE"
			LATEST=$MESSAGE
			attention
		fi
	done
}
# Supposed to make small beeps in succession
function attention {
	sleep 0.1
	echo -ne "\a"
	sleep 0.1
	echo -ne "\a"
	sleep 0.1
	echo -ne "\a"
}